Explanatory note: The Niagara River flows north from Lake Erie to
Lake Ontario, which is why it appears upside down in the diagram
above. The name "Niagara" is said to originate from an Iroquois word "Onguiaahra" meaning "The Strait," according to http://citynoise.org/article/7710/by/elicar.

January Puzzle Solvers
(The first ten are listed in the order their solutions were received, the others alphabetically)